Granite Bay is a census-designated place (CDP) situated in Placer County, California, within the United States. It serves as a primarily residential suburb of the Sacramento metropolitan area, positioned geographically just east of Roseville and west of Folsom Lake.
According to the 2020 census, Granite Bay had a population of 21,247, reflecting an increase from the 20,402 residents recorded in 2010. The area is served by the ZIP codes 95746 and 95661.